Q. How does a Mezuzah protect our homes?
The Torah commands us to affix a Mezuzah on the doors of our home (Deuteronamy 6:9, 11:20). The Mezuzah consists of a piece of parchment the two paragraphs of the Shema written on it by hand. The parchment is then rolled up, placed in a case and put on the door.
One of the reasons given for the Mitzvah of Mezuzah is that it protects our home. By putting a Mezuzah on the door, we make our home part of a Mitzvah, bringing spirituality to the home. It also signifies that we recognize that although we live in the home, the home's true owner is G‑d. As our host, G‑d will protect His guests and its belongings.
For this reason on the back of the rolled parchment we write G‑d's name Sha-dai (G‑d has seven Hebrew names). This stands for shomer daltot yisrael - He guards the doors of Israel.
Becuase of this, traditionally Jews were always careful to ensure that they have a Kosher Mezuzah on our doors. If the writing inside the Mezuzah is erased, the it is not Kosher and it no longer protects us. Often when someone in the house is sick or a bad incident happens in the home, a Jew will have their Mezuzah's checked to ensure they are Kosher.
Learn more about the Mezuzah here
To order a Mezuzah for your home or have your Mezuzah's checked email [email protected] or call 310-214-4999